[dpdk-dev] [PATCH] net/bnxt: use FUNC_QCFG cmd to retrieve allocated resources for PF

[dpdk-dev] [PATCH] net/bnxt: use FUNC_QCFG cmd to retrieve allocated resources for PF

[Somnath Kotur]

This cmd should be called by every driver after 'hwrm_func_cfg'
to get the actual number of resources allocated by the HWRM.
The values returned in the cmd are the max values for that PF.

Also, now that the max values for the PF are computed in probe itself,
no need to invoke FUNC_QCAPs or any other cmd in dev_configure_op()
as that would just override the actual max values obtained above.

Fixes: f8168ca0e69 ("net/bnxt:  support thor controller")
Cc: stable@dpdk.org

Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
---
 drivers/net/bnxt/bnxt_ethdev.c |  7 -------
 drivers/net/bnxt/bnxt_hwrm.c   | 36 +++++++++++++++++++++++++++++++++-
 2 files changed, 35 insertions(+), 8 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 81c8f8d79d..0de8867bd6 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -1060,13 +1060,6 @@ static int bnxt_dev_configure_op(struct rte_eth_dev *eth_dev)
 		}
 
 		pthread_mutex_unlock(&bp->def_cp_lock);
-	} else {
-		/* legacy driver needs to get updated values */
-		rc = bnxt_hwrm_func_qcaps(bp);
-		if (rc) {
-			PMD_DRV_LOG(ERR, "hwrm func qcaps fail:%d\n", rc);
-			return rc;
-		}
 	}
 
 	/* Inherit new configurations */
diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 24c33185b4..147d5ef5df 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -3455,6 +3455,35 @@ static int bnxt_update_max_resources(struct bnxt *bp,
 	return 0;
 }
 
+/* Update the PF resource values based on how many resources
+ * got allocated to it.
+ */
+static int bnxt_update_max_resources_pf_only(struct bnxt *bp)
+{
+	struct hwrm_func_qcfg_input req = {0};
+	struct hwrm_func_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
+	int rc;
+
+	/* Get the actual allocated values now */
+	HWRM_PREP(&req, HWRM_FUNC_QCFG, BNXT_USE_CHIMP_MB);
+	req.fid = rte_cpu_to_le_16(0xffff);
+	rc = bnxt_hwrm_send_message(bp, &req, sizeof(req), BNXT_USE_CHIMP_MB);
+	HWRM_CHECK_RESULT();
+
+	bp->max_rsscos_ctx = rte_le_to_cpu_16(resp->alloc_rsscos_ctx);
+	bp->max_stat_ctx = rte_le_to_cpu_16(resp->alloc_stat_ctx);
+	bp->max_cp_rings = rte_le_to_cpu_16(resp->alloc_cmpl_rings);
+	bp->max_tx_rings = rte_le_to_cpu_16(resp->alloc_tx_rings);
+	bp->max_rx_rings = rte_le_to_cpu_16(resp->alloc_rx_rings);
+	bp->max_l2_ctx = rte_le_to_cpu_16(resp->alloc_l2_ctx);
+	bp->max_ring_grps = rte_le_to_cpu_16(resp->alloc_hw_ring_grps);
+	bp->max_vnics = rte_le_to_cpu_16(resp->alloc_vnics);
+
+	HWRM_UNLOCK();
+
+	return 0;
+}
+
 int bnxt_hwrm_func_qcfg_current_vf_vlan(struct bnxt *bp, int vf)
 {
 	struct hwrm_func_qcfg_input req = {0};
@@ -3554,8 +3583,13 @@ int bnxt_hwrm_allocate_pf_only(struct bnxt *bp)
 		  HWRM_FUNC_CFG_INPUT_FLAGS_STD_TX_RING_MODE_DISABLE);
 	bp->pf->func_cfg_flags |=
 		HWRM_FUNC_CFG_INPUT_FLAGS_STD_TX_RING_MODE_DISABLE;
+
 	rc = bnxt_hwrm_pf_func_cfg(bp, &pf_resc);
-	rc = __bnxt_hwrm_func_qcaps(bp);
+	if (rc)
+		return rc;
+
+	rc = bnxt_update_max_resources_pf_only(bp);
+
 	return rc;
 }
 
-- 
2.28.0.497.g54e85e7